Hinge-pin for breakdown guns.



0. W. RINGQVIST. HINGE PIN FOR BREAKDOWN GUNS;

APPLICATION FILED JULY 8, 1902.

PATENTED JULY 14, 1908.

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OTTO W. RINGQVIST, OF FITOHBURG, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGNMENTS,

TO MARY ELIZABETH JOHNSON, TRUSTEE, OF FITOHBURG, MASSACHUSETTS.

HINGE-PIN FOR BREAKDOWN GUNS.

Specification of Letters Patent.

Patented July 14, 190

Application filed July 8, 1902. Serial No. 114,739.

T 0 all whom it may concern:

Be it known that I, OTTO W. Rnvcovrsr, a citizen of the United States,residing at Fitchburg, in the county of Worcester and Commonwealth ofMassachusetts, have invented a new and useful Improvement in Hinge-Pinsfor Breakdown Guns, of which the following is a specification,accompanied by drawings forming a part of the same, in which Figure 1 isa side view of a portion of a break down. gun, showing my improved hingepin. Fig. 2 is a top view of the same. Fig. 3 is a section on line 33,Fig. 1, looking toward the rear of the gun. Figs. 4 and 5 areperspective views of my improved hinge pin. Fig. 6 is a side view of myimproved hinge pil shownpartly in section. Fig. 7 is a side view of thesame showing the hinge pin applied to the frame of the gun, and Fig. 8is an enlarged diagrammatic view showing the ec centricity of the jointbetween the frame and the forestock.

Similar reference letters and figures refer to similar parts in thedifferent views.

My invention relates to improvements in hinge pins for break down gunsand is designed to furnish means for the easy insertion and withdrawalof the hinge pin, and also to prevent the removal of the hinge pin except when the gun is broken down, and it consists in the constructionand arrangement of parts as hereinafter described and pointed out in theannexed claims.

Referring to the accompanying drawings A denotes the gun stock with theframe A attached thereto. The barrel B is pivotally attached to theframe A by the hinge pin 0 which passes through the holes D D in theframe A and the hole B in the rib B of the gun barrel B; said gun barrelB turning on said hinge pin O when the gun is broken down. The hinge pinC is screw threaded at one end O and is adapted to screw intocorresponding screw threads in one of the holes D in the frame A of thegun. At the opposite end of the hinge pin C is a bifurcated head C whichis held in the recess C on the opposite side of the frame from the screwthreaded hole D The handle D of the hinge pin C is adapted to enter thebifurcation in the head C and is provided with a slot D through which apivot pin E, held in the head G extends, whereby the handle D has apivotal connection with the hinge pin O and is also adapted to receive asliding motion in the bifurcated head O A tail piece D at one end of thehandle D is formed to abut against the hinge pin 0 and limit the outwardrotation of the handle O on the pivot pin E, Figs. 4 and 6. A lockingpin F and spring G are provided in the hinge pin C and the locking pin Fbears against the handle D opposite the pivot pin E. When the hinge pinO is in its proper position in the gun, the handle D is depressed into arecess I in which it is held by the locking pin F, Figs. 5 and 7. Whenthe handle D is'in its elevated position the pin F bears against theshoulder J and retains the pin F in that-position. dle D are knurled atK and L.

Fig. 8 is a diagrammatic view which is designed simply to show theaction of the The ends of the haneccentric joint between the ends of theframe A and the forestock :0 which is attached to the barrel in theordinary manner. The solid line F in Fig. 8 shows the actual joint asgoverned by the convex ends of the frame A The concave plane of the endsof the forestock :0 attached to the barrel would normally follow theline F as the barrel is rotated on the hinge pin and the gun is closed,but the eccentric construction of the convex ends of the frame A forcesforward the forestock x and with it the barrel and rib B a distanceequal to the difference between the solid line F and the broken line Fwhich is also the difference between the centers 0 and P of circlescorrespondingto lines F and F This brings the hole B in the rib of thebarrel slightly out of alinement with the holes D D in the frame andhence the hinge pin is held firmly in its position.

When the gun is broken down the broken.

line F showin the normal position of the concave end of the forestock,rotates entirely below and forward of the line F which is the positionof the concave ends of the frame A so that instead of binding there is aslight longitudinal play between the frame and the forestock 0c. Whenthe gun is broken down, therefore, the hinge pin C may be readilyunscrewed, but when the barrel is in the position shown in Fig. 1, theslight binding action upon the hinge pin 0 prevents its removal, therebylocking the hinge pin.

The method of operation of my improved hin e pin is as follows :When thegun barrel is placed in the broken down position, the

hinge pin 0 is inserted in place and screwed in by means of the handle Dwhich is placed in the position shown in Figs. 4 and 6 to serve as alever handle for the hinge pin. When completely inserted the bifurcationin the head C is in alinement with the recess I and pressure upon theknurled end K depresses the handle D to a position approx1- mately atright angles with the hinge pin C, and into the recess I, as shown inFigs. 5 and 7. The barrel is then closed in the position shown in Fig.1, and the eccentricity of the joint F moves the hole B in the rib B ofthe barrel, which slightly binds the hinge pin 0 and locks it inosition. In taking the gun apart, it is first roken down to revent thebinding of the hinge pin, the han e D is then swung into its outwardposition, as shown in Figs. 4 and 6, by pressure u on the knurled end Land the hinge pin unscrewed by means of the handle D.

What I claim as my invention and desire to secure by Letters Patent isz 1. In a break down gun, a screw threaded hinge pin provided with apivot pin in one end, a lever handle provided with a slot inclosing saidpivot pin, whereby said handle is capable of both a rocking and asliding motion on its pivotal connection, and means for limiting theoutward swing of the lever handle.

2. In a break down un, the combination with a frame and barre hingedthereto, of a screw threaded hinge pin provided with a pivot pin at oneend, a lever handle provided with a slot inclosing said ivot pin,whereby said lever handle is capab e of both a rocking and slidingmotion on its pivotal connection, means for applying a yielding ressureto said lever handle and means for fimiting the outward swing of saidlever handle, substantially as described.

3. In a break down gun, the combination with a frame having a holetherein to receive a hinge pin and provided at its outer surface with arecess extending diametrically across said hole, of a screw threadedhinge pin held in the frame, a lever handle having a pivotal connectionwith one end of said hinge pin and adapted to lie in its normal positionin said recess, whereby the handle is locked against turning, saidhandle having a slot inclosing the pivot, whereby it is capable of botha sliding and rocking motion on its pivotal connection with said hingepin and means for limiting the outward swing of said lever handle,substantially as described.

4. The combination with the frame of a break down gun, having a holetherein to receive a hinge pin and provided on its outer surface with arecess diametrically across said hole, of a hinge pin adapted to enterthe hole in the frame, a slotted handle having a pivotal connection withsaid hinge pin and' capable of both rocking and sliding on said:

pivotal connection, means for applying a yielding pressure to saidslotted handle, and means for limiting the outward swing of said handle,substantially as described.

5. A hinge-pin for break-down guns comprising a pin pro er having ascrew thread at one end and a b 'urcated head at the other, a handleprovided with a slot located at or near one end thereof, and extendingsubstantially parallel with the edges of the handle, the handle fittedin the bifurcated head and retained therein by a pin which passesthrough the slot, and a spring actuated pin fitted to a bore formed inthe hinge-pin proper, and bearing at all times upon some portion of thehandle immediately opposite the pivot pin.

6. A hinge-pin comprising a in proper threaded at one end and providedwith a bifurcated head at the opposite end, ahandle having a slot andsliding pivotal connection in the bifurcated portion of the head, saidhandle provided with a tail-piece and shoulder adjacent thereto, and aspring actuated locking pin which has a sliding connection in the boreformed in the axial center of the pin proper, and bearing outwardly atall times upon some ortion of the handle adjacent to the inner e ge ofthe elongated slot, whereby to retain the handle yieldingly in osition.

7. The combination with the rame of a break-down gun having a holetherein for the rece tion of a hinge pin and providedwith an e ongatedrecess in 1ts outer surface which extends arallel or approximatelyparallel with the ength of the frame and crosses the hole for the hingein, of a hinge pin adapted to be inserted in t e hole, and provided witha bifurcated or slotted head which alines with and forms a continuationof the recess when the hinge pin is inserted in the hole to its fullestextent, and a handle having sliding pivotal connection within theslotted or bifurcated portion of the head, and adapted when the screw isin its normal position to be swung into the recess in the frame of thegun whereby to lock the hinge-pin against turning.

8. The combination with the frame of a ioo its

break down gun, of a barrel rovided' with a V rib, holes in said framean hinge pin inserted in said holes, and means for moving the hole insaid rib out of alinement with the holes in the frame when the barrel isswung into the firing osition.

9..The combination with t e frame of a break down gun, of a barrelprovided with a rib, holes in said frame and a single hole in said rib,and means for moving said rib laterally when the barrel passes from itsbreak down to its firing position.

10. The combination with the frame of a break down gun, of a barrelprovided with a rib, holes in said frame and a single hole in said rib,said holes being concentric when said barrel is broken down, and a jointbein said rib, a

tween said rib and said frame which is slightly eccentric to said holesin the frame.

11. The combination With the frame of a break down gun, of a barrelprovided With a rib, holes in said frame and in said rib, a hinge pininserted in said holes, a forestock l attached to said barrel, aneccentric joint between said frame and said forestock, where by theholes in said rib and the hole insaid barrel are brought slightly out ofalinement when said barrel is in the firing position.

12. The combination with the frame of a l break down gun, of a barrelprovided With a rib, a hinge pin connecting said rib and said frame, andmeans operated by the movement of the barrel" on the hinge pin forbinding the hinge pin when the barrel is in the firing position.

Dated this 27th day of June 1902.

' OTTO W. RINGQVIST.

Witnesses:

M. M. SCHUERMAN RUFUS B. FOWLER.

